tnftp dependencies are a big bootstrapping and updating hassle. If it
does grow a new dependencies, it'd be nice if there was also something
like a tnftp_basic package that avoids all dependencies (no ncurses, no
openssl), which was then available during bootstrapping to pull down
ncurses and openssl for the full tnftp.

Just for notification, "net/tnftp require buitin termcap" issue is
resolved.

It is regression since converted from "devel/readline/builtin.mk" to
"mk/readline.builtin.mk" mechanically.

Huh, yes that seems to be fixed.

That reduces the payoff of using a cut-down tnftp_basic, so actually a
beefed-up tnftp_ssl would be an equally valid approach judged on this
metric. I'm not sure which I prefer now :)

Either way the solution is the same, it's just a matter of which package
gets to produce the executable called "/usr/pkg/bin/ftp".